The main characters in *Paranormal Activity 2* are:
* Katie and Micah: The couple from the first film, whose lives are further haunted.
* Kristi and Daniel: Katie's sister and her husband.
* Hunter: Kristi and Daniel's young son.
It's important to note that the name "Hunter Rey" does not exist in the *Paranormal Activity* franchise. It's possible you might be thinking of a different character or a character from another movie.